DDR-based high-efficiency matrix transposition processing method

Abstract

The invention discloses a DDR-based high-efficiency matrix transposition processing method. The method comprises the following steps of matching a write RAM and a read RAM with an IP core of a DDR3 SDRAM; wherein a to-be-transposed matrix is a 128 * 128 matrix with 64 bits of single data, and data of each row of the to-be-transposed matrix is taken as a small matrix; writing 16 data in each activesignal in the writing operation process; reading 8 * 16 pieces of data by each active signal in the reading operation process; and performing reading in DDR according to a same inter-row and data cyclic skip rule, so that the occurrence of row active signals is reduced as much as possible. According to the invention, the problem that the overall processing rate of the system is reduced due to the jump access of the DDR SDRAM in large-order matrix transposition is solved. By the matrix partitioning technology, on the basis that the writing rate is reduced to a small extent, the reading rate is greatly increased, the DDR reading and writing rate is balanced when a matrix is transposed, and therefore the average DDR reading and writing efficiency is improved.

Description

technical field [0001] The invention belongs to the field of data transposition in radar imaging technology, and relates to a processing method for fast transposition of relatively large amount of data in the radar imaging process. Background technique [0002] Synthetic Aperture Radar (SAR) is a radar with high-resolution imaging effects. Compared with traditional radar, SAR has the advantages of being able to penetrate obstacles all-weather and all-weather. It plays an important role in environmental detection, terrain reconnaissance, target recognition and other fields. SAR is mainly carried on three working platforms, which are airborne, space-borne, and bomb-borne. Focused SAR images can be obtained by algorithmic processing of echo signals. The previous SAR imaging system is not only complicated in structure and high in manufacturing cost, but also has relatively large weight and volume. Nowadays, with the rapid development of foreign unmanned aerial vehicles and li...

AI Technical Summary

Problems solved by technology

[0006] When running the SAR real-time imaging system on the FPGA, in the process of transposing a large amount of data using the conventional transposition method, due to the problem of low reading efficiency caused by the row activation active signal of the DDR, at the same time, in order to convert the matrix Verify the correctness of the post-positioned results, and introduce a 64-bit check digit

Images